Figure 13: Host failover with VMware HA
VMware HA links up multiple ESX/ESXi servers to form a cluster with
shared resources. If one host fails, VMware HA reacts immediately by
restarting any affected virtual machine on a different host. The cluster is
created and managed via VirtualCenter.
For a detailed description of the high-availability functionality with VMware
HA, visit http://www.vmware.com/pdf/vmware_ha_wp.pdf.
HA functionality supported by Virtual-IO Manager
HA functionality is supported by Virtual-IO Manager by the following meas-
ures:
l The central ServerView Virtual-IO Manager service is configured to be
restarted automatically in the event of failure. This automatic restart of
the service is configured during installation of Virtual-IO manager. By
default the following restart behavior is configured:
o
The first restart of the service is tried 5 seconds after unexpected ter-
mination of the service.
o
The second restart is tried 30 seconds after termination of the serv-
ice.
o
Subsequent restarts are tried 60 seconds after termination of the
service.
o
The restart counter is reset after 600 seconds.
ServerView Virtual-IO Manager 53
2.7 High-Availability (HA) support
